Armoring-machine.



2 sums-sum 1.

G. T.. PRATT. ARMORING MACHINE. APPLICATION FILED JULY 16, 1910.

INVENTOR Charms 7T Prafrl'. BY 7 fm ATTORNEYS. I

BT a7- WITNESSES:

' O. T. PRATT.

ARMORING MACHINE.

APPLICATION FILED JULY 16, 1910.

' 1,091,1 61. Patented Mar. 24, 191 1 2 SHEETS-SHEET 2.

WITNESSES:

' v BY Fizo fm RNEYS INVENTOR 67 Cbafles T Prof/t UNITED STATES PATENT, oriuoa.

CHARLES T. PRATT, 0F FRANKFORT, NEW YORK, ASSIGNOR 'IO PRATT CHUCK COM- PANY, OF FRANKFORT, NEW YORK, A CORPORATION.

ARMORING-MACHINE.

To all whom it may concern:

Be it known that I, CHARLES T. PRA'rr, a citizen of the United States, residing at Frankfort, in the county of Herkimer and State of New York, have invented certain new and useful Improvements in Armor-ing- Machines, of which the following is a specification, reference being bad therein to the accompanying drawing.

My invention relates to'an improved armoring machine, and I declare that the following is a full, clear, concise, and exact de scription thereof, sufficient to enable one skilled in the art to make and use the same, reference being had to the accompanying drawings, in which like reference characters refer to like parts throughout.

By the term used I refer to such adevice as is illustrated in the drawings and which is constructed to manufacture a spirally coiled strip into a flexible armor or conduit for electrical current wires or mechanisms common in mechanical arts, and I illustrate the device in one particular form. without restricting myself in-the matter of details of construction except as defined by the claims.

In the drawings Figure 1 is a plan view of the device; Fig. 2 is an elevation of a portion of the device, parts being broken away; Fig. 3 is a side view of a portion of the device, a part of'the table being broken away; Fig. 4 is a plan view of a part of the device shown in Fig. 3; Fig. 5 is a side view of parts of the device, the table being broken away; Fig. 6 is a perspective view of the die member, while Fig. 7 is a sectional View of the same on the line 2.2 of Fig. 6, and Fig. 8 is a view of the .armor produced by the machine, partly in section, and Fig. 9 is a detail view of certain parts.

Referring to the figures in detail, 1 represents the table which will be provided with suitable supports 2.

3 is a shaft supported on the table having at one end a power pulley 5 and an idler 6. At the other end is mounted. hand-wheel 7 for manual operation of the machine. The shaft carries a beveled gear 10 which meshes Specification of Letters Patent.

Patented .Mar. 24, 1914.

Application filed July 16, 1910. Serial No. 572,251.

with beveled gear 11 mounted on a shaft 12 suitably supported relative to the table, the details of which however need not be shown. The shaft 12 has a worm 13 which meshes with worm-gear 14. This worm-gear 14 is carried on the shaft 17, journaled in a housing 20 which is secured to or integral with the table. There is a counterpart of this housing shown at 22, Fig. 1, having a shoulder 23 whereat it is pivotally supported relative to the table lugs 24. The housing 22 has a shaft 27. The shaft 17 carries'a gear 18 and the shaft 27. carries a gear 28, the two gears intermeshing. I

On the table is the bifurcated head 30, a similar head 31 being provided integral with the housing 22. Plvotally mounted in the head 30 is the threaded shaft 33 with a wheel nut- 34, having a boss 35. A spring 365s provided which bears at one end on the head 30 and at the other end on he head 31, the pressure of which tends to swing the upper housing upward. By adjustment of wheel 34 the action of this spring is counteracted so that the upper housing can be brou ht to and secured in a given position. ach of the shafts 17 and 27 carries a forming-wheel, 38 and 39, correspondingly fashioned to give a curvature in cross-section 'to the metallic strip or ribbon 40 which is fed to the die of the machine through the rollers, the nearness of contact of rollers 38 and 39 being regulated by the means just described.

The die of the machine is held in a bracket, indicated at 45, which is secured to the table top; The die is shown at and it is seen in its entirety in Fig. 6. The bracket has lugs 46 and 47, between which is placed the head 48 of the die 50, allowing vertical movement of the same. The bracket also has a lug 49 in which an adjusting screw 51 is mounted to regulate the vertical position of the die. A clamp 53 is secured to the bracket by bolt and nut, as seen at 54, to hold the die against the bracket. The die itself has a transverse bore, as at 55, which is formed with spiral grooves, Fig. 7. As the ribbon is fed into the die the portion shown at 57, Fig. 8, moves along the groove 59. This is one essential'of the construction of the die, the other grooves being formed to permit free exit of the tube or coil when Wound and to provide space for the strip 40 in passing into the die and around the bore While being operated upon by the forming mechanism to be described.

.As will be seen, the die is formed of two parts which when assembled are held from moving longitudinally with reference to each other by a V shaped wedge or projection 60, integral with one part and fitting into a corresponding recess in the other part of said die. The upper portion has a bore 61. for one of the hammers, to be described, and the lower portion has a bore 62 for like purpose. The tip of the die, as seen in Fig. 3, extends forward to receive the strip as it comes from between the rollers 38 and 39. On the bracket at 65 is pivoted the bellcrank lever having arms 66 and 67, the latter of which extends downward through a slot in the table.

70 is a shaft suitably mounted on the table, actuated from a pulley 71 at one end which receives power through belt 72'from pulley 73 mounted on the shaft 3.

75 is a pitman-wheel mounted on the shaft 70 and carrying pitman rod 7 6 which connects to the arm 67 of the bell-crank lever, by which mechanisms the lever is rapidly vibrated to and fro. At the end of arm 66, where forked, is pivotally mounted block 77 by pin 78, which has bearings in the forked end of the arm 66. In the lower end of block 77 is mounted punching tool 80 which passes through the opening 61 in the die so that its end strikes against the steel or metallic ribbon or strip which is fed through the die at various places along the line shown in a general way by the marks ac in Fig. 8. The punching tool is held in adjustment by means of setscrew 82, the screw 83 being provided to pass centrally into the block 77 to bear against the end of the punching tool 80 to give the same sufiicient backing. The arm 67 is formed with a bifurcated portion to receive block 85 which has like parts and construction as the block 77 for carrying the forming tool 88 which moves horizontally through the bore 62 in the block to give horizontal blows to the ribbon or strip along the line as indicated at w in Fig. 8.

It will, of course, be evident that it would be impossible to coil a strip into an armor or tube of equal diameter from end to end except the inner edge, that is the one to be overlapped by the succeeding coil, were reduced in diameter or crowded inward relative to the overlapping edge so as to make room for the overlapping edge. This is accomplished by the mechanism described where the vertical and horizontal hammers with rapid intermittent action strike against this ribbon as it is being wound and reduce in diameter, that edge within a compass necessary to permit the overlapping of the other edge and keep the tube of its given s1ze.

In Fig. 5 is shown a belt-tightening device and method for securing the same. 90 is an arm pivoted on the frame at 91 having at 92 a pulley bearing against the belt 72. The other end of the bar or arm 90 is bifurcated and between the prongs receives one end of bar 94 pivoted to the frame at 95 and carrying a cross head 96 which rests within the curved ends of the bar 90, as indicated. The cross-head 96 is adapted to be moved up and down the bar 94 and to be held at any given position thereon'by setnut 99 screw mounted upon bar 94.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In an armoring machine, the combination of forming Wheels adjustably held in relation to each other, means for coiling a metallic strip after, the same has passed through said forming wheels, and means for giving intermittent blows to one edge of said strip, whereby to reduce in diameter one edge thereof for the overlapping thereon of the edge of the succeeding coil.

2. In'a device of the character described, the combination of forming wheels adjustably held with reference to each other, a die adapted to receive and coil a metallic strip after same has passed between said forming wheels} and reciprocating hammers, working insaid die from different directions and adapted to impart blows to the edge of said strip, whereby to reduce in diameter said edge for the overlapping of the edge of the succeeding coil, substantially as described.

3. In an armoring machine, a die adapted to receive and coil a strip of metal and hammers reciprocated within said die whereby blows may be imparted to one edge of said coiled strip to reduce the diameter of the coil to receive the overlapping edge of the succeeding coil.

4:. In an armoring machine, the combination with a die adapted to receive and coil a metallic strip and hammers reciprocating in said die and giving intermittent blows from different directions to one edge of an armoring strip whereby to reduce the diameter of the coil at one edge of the strip.

5. In an armoring machine of the character described, the combination, of forming wheels journaled on-shafts carried in housings, a die adapted to receive and coil a metallic strip passed thereto from said forming wheels, apertures in said die for the reception of hammers, means for actuating said hammers whereby to give blows to one with the main shaft of the machine, subedge of said metallic strip for reducing in stantially as described. 10 diameter one edge of said coil for the over- In testimony whereof I hereunto affix my lapping of the succeeding edge, said means signature in the presence of two Witnesses. for actuating said hammers comprising a CHARLES T. PRATT.

bell crank lever connected with a pitman Witnesses:

rod pivotally secured to a pitman-wheel car- HENRY M. LovE,

ried by a shaft rotated by abelt connection T. L. WILDER.

copiel of this patent may be obtained for live cents each, by addreuing the Commissioner of Patents, Washington, D. G." 

